Add expression for sage

pkgs/applications/science/math/sage/default.nix

@@ -0,0 +1,31 @@
+{ stdenv, fetchurl, m4, perl, gfortran, texLive, ffmpeg, tk
+, imagemagick, liblapack
+}:
+
+stdenv.mkDerivation rec {
+  name = "sage-6.1.1";
+
+  src = fetchurl {
+    url = "http://mirrors.xmission.com/sage/src/sage-6.1.1.tar.gz";
+    sha256 = "0kbzs0l9q7y34jv3f8rd1c2mrjsjkdgaw6mfdwjlpg9g4gghmq5y";
+  };
+
+  buildInputs = [ m4 perl gfortran texLive ffmpeg tk imagemagick liblapack ];
+
+  enableParallelBuilding = true;
+
+  preConfigure = ''
+    export SAGE_NUM_THREADS=$NIX_BUILD_CORES
+    sed -i 's/if ! [ -d "$HOME" ]/if [ -d "$HOME" ]/' src/bin/sage-env
+  '' ++ stdenv.lib.optionalString stdenv.isDarwin ''
+    sed -i "s/ld_version = try_run('ld  -v')/ld_version = 'Apple'/" \
+      build/pkgs/atlas/configuration.py
+  '';
+
+  meta = {
+    homepage = http://www.scilab.org/;
+    description = "Scientific software package for numerical computations (Matlab lookalike)";
+    # see http://www.scilab.org/legal
+    license = "SciLab";
+  };
+}

pkgs/top-level/all-packages.nix

@@ -10209,6 +10209,8 @@ let
 
   mathematica = callPackage ../applications/science/math/mathematica { };
 
+  sage = callPackage ../applications/science/math/sage { };
+
   ### SCIENCE/MOLECULAR-DYNAMICS
 
   gromacs = callPackage ../applications/science/molecular-dynamics/gromacs {